qtype stringclasses 16
values | Question stringlengths 16 191 | Answer stringlengths 6 29k |
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genetic changes | What are the genetic changes related to pilomatricoma ? | Mutations in the CTNNB1 gene are found in almost all cases of isolated pilomatricoma. These mutations are somatic, which means they are acquired during a person's lifetime and are present only in tumor cells. Somatic mutations are not inherited. The CTNNB1 gene provides instructions for making a protein called beta-ca... |
inheritance | Is pilomatricoma inherited ? | Most people with isolated pilomatricoma do not have any other affected family members. However, rare families with multiple affected members have been reported. In these cases, the inheritance pattern of the condition (if any) is unknown. |
treatment | What are the treatments for pilomatricoma ? | These resources address the diagnosis or management of pilomatricoma: - Genetic Testing Registry: Pilomatrixoma These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling ... |
information | What is (are) Tietz syndrome ? | Tietz syndrome is a disorder characterized by profound hearing loss from birth, fair skin, and light-colored hair. The hearing loss in affected individuals is caused by abnormalities of the inner ear (sensorineural hearing loss) and is present from birth. Although people with Tietz syndrome are born with white hair and... |
frequency | How many people are affected by Tietz syndrome ? | Tietz syndrome is a rare disorder; its exact prevalence is unknown. Only a few affected families have been described in the medical literature. |
genetic changes | What are the genetic changes related to Tietz syndrome ? | Tietz syndrome is caused by mutations in the MITF gene. This gene provides instructions for making a protein that plays a role in the development, survival, and function of certain types of cells. Molecules of the MITF protein attach (bind) to each other or with other proteins that have a similar structure, creating a ... |
inheritance | Is Tietz syndrome inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the condition. |
treatment | What are the treatments for Tietz syndrome ? | These resources address the diagnosis or management of Tietz syndrome: - Genetic Testing Registry: Tietz syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling... |
information | What is (are) Alexander disease ? | Alexander disease is a rare disorder of the nervous system. It is one of a group of disorders, called leukodystrophies, that involve the destruction of myelin. Myelin is the fatty covering that insulates nerve fibers and promotes the rapid transmission of nerve impulses. If myelin is not properly maintained, the transm... |
frequency | How many people are affected by Alexander disease ? | The prevalence of Alexander disease is unknown. About 500 cases have been reported since the disorder was first described in 1949. |
genetic changes | What are the genetic changes related to Alexander disease ? | Mutations in the GFAP gene cause Alexander disease. The GFAP gene provides instructions for making a protein called glial fibrillary acidic protein. Several molecules of this protein bind together to form intermediate filaments, which provide support and strength to cells. Mutations in the GFAP gene lead to the product... |
inheritance | Is Alexander disease inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Most cases result from new mutations in the gene. These cases occur in people with no history of the disorder in their family. Rarely, an affected person inherits the... |
treatment | What are the treatments for Alexander disease ? | These resources address the diagnosis or management of Alexander disease: - Gene Review: Gene Review: Alexander Disease - Genetic Testing Registry: Alexander's disease - MedlinePlus Encyclopedia: Myelin These resources from MedlinePlus offer information about the diagnosis and management of various health conditio... |
information | What is (are) Turner syndrome ? | Turner syndrome is a chromosomal condition that affects development in females. The most common feature of Turner syndrome is short stature, which becomes evident by about age 5. An early loss of ovarian function (ovarian hypofunction or premature ovarian failure) is also very common. The ovaries develop normally at fi... |
frequency | How many people are affected by Turner syndrome ? | This condition occurs in about 1 in 2,500 newborn girls worldwide, but it is much more common among pregnancies that do not survive to term (miscarriages and stillbirths). |
genetic changes | What are the genetic changes related to Turner syndrome ? | Turner syndrome is related to the X chromosome, which is one of the two sex chromosomes. People typically have two sex chromosomes in each cell: females have two X chromosomes, while males have one X chromosome and one Y chromosome. Turner syndrome results when one normal X chromosome is present in a female's cells and... |
inheritance | Is Turner syndrome inherited ? | Most cases of Turner syndrome are not inherited. When this condition results from monosomy X, the chromosomal abnormality occurs as a random event during the formation of reproductive cells (eggs and sperm) in the affected person's parent. An error in cell division called nondisjunction can result in reproductive cells... |
treatment | What are the treatments for Turner syndrome ? | These resources address the diagnosis or management of Turner syndrome: - Genetic Testing Registry: Turner syndrome - MedlinePlus Encyclopedia: Ovarian Hypofunction - MedlinePlus Encyclopedia: Turner Syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health co... |
information | What is (are) auriculo-condylar syndrome ? | Auriculo-condylar syndrome is a condition that affects facial development, particularly development of the ears and lower jaw (mandible). Most people with auriculo-condylar syndrome have malformed outer ears ("auriculo-" refers to the ears). A hallmark of this condition is an ear abnormality called a "question-mark ea... |
frequency | How many people are affected by auriculo-condylar syndrome ? | Auriculo-condylar syndrome appears to be a rare disorder. More than two dozen affected individuals have been described in the medical literature. |
genetic changes | What are the genetic changes related to auriculo-condylar syndrome ? | Auriculo-condylar syndrome can be caused by mutations in either the GNAI3 or PLCB4 gene. These genes provide instructions for making proteins that are involved in chemical signaling within cells. They help transmit information from outside the cell to inside the cell, which instructs the cell to grow, divide, or take o... |
inheritance | Is auriculo-condylar syndrome inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is typically sufficient to cause the disorder. In some cases, an affected person inherits the mutation from one affected parent. Other cases result from new mutations in the gene and occur in people with ... |
treatment | What are the treatments for auriculo-condylar syndrome ? | These resources address the diagnosis or management of auriculo-condylar syndrome: - Genetic Testing Registry: Auriculocondylar syndrome 1 - Genetic Testing Registry: Auriculocondylar syndrome 2 - MedlinePlus Encyclopedia: Cleft Lip and Palate - MedlinePlus Encyclopedia: Pinna Abnormalities and Low-Set Ears These... |
information | What is (are) cold-induced sweating syndrome ? | Cold-induced sweating syndrome is characterized by problems with regulating body temperature and other abnormalities affecting many parts of the body. In infancy, the features of this condition are often known as Crisponi syndrome. Researchers originally thought that cold-induced sweating syndrome and Crisponi syndrome... |
frequency | How many people are affected by cold-induced sweating syndrome ? | Cold-induced sweating syndrome is a rare condition; its prevalence is unknown. The condition was first identified in the Sardinian population, but it has since been reported in regions worldwide. |
genetic changes | What are the genetic changes related to cold-induced sweating syndrome ? | About 90 percent of cases of cold-induced sweating syndrome and Crisponi syndrome result from mutations in the CRLF1 gene. These cases are designated as CISS1. The remaining 10 percent of cases are caused by mutations in the CLCF1 gene and are designated as CISS2. The proteins produced from the CRLF1 and CLCF1 genes w... |
inheritance | Is cold-induced sweating syndrome inherited ? | Cold-induced sweating syndrome is inherited in anautosomal recessive pattern, which means both copies of the CRLF1 or CLCF1 gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of t... |
treatment | What are the treatments for cold-induced sweating syndrome ? | These resources address the diagnosis or management of cold-induced sweating syndrome: - Gene Review: Gene Review: Cold-Induced Sweating Syndrome including Crisponi Syndrome - Genetic Testing Registry: Cold-induced sweating syndrome 1 - Genetic Testing Registry: Cold-induced sweating syndrome 2 - Merck Manual Consu... |
information | What is (are) Chanarin-Dorfman syndrome ? | Chanarin-Dorfman syndrome is a condition in which fats (lipids) are stored abnormally in the body. Affected individuals cannot break down certain fats called triglycerides, and these fats accumulate in organs and tissues, including skin, liver, muscles, intestine, eyes, and ears. People with this condition also have dr... |
frequency | How many people are affected by Chanarin-Dorfman syndrome ? | Chanarin-Dorfman syndrome is a rare condition; its incidence is unknown. |
genetic changes | What are the genetic changes related to Chanarin-Dorfman syndrome ? | Mutations in the ABHD5 gene cause Chanarin-Dorfman syndrome. The ABHD5 gene provides instructions for making a protein that turns on (activates) the ATGL enzyme, which breaks down triglycerides. Triglycerides are the main source of stored energy in cells. These fats must be broken down into simpler molecules called fat... |
inheritance | Is Chanarin-Dorfman syndrome inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for Chanarin-Dorfman syndrome ? | These resources address the diagnosis or management of Chanarin-Dorfman syndrome: - Genetic Testing Registry: Triglyceride storage disease with ichthyosis - MedlinePlus Encyclopedia: Ichthyosis vulgaris These resources from MedlinePlus offer information about the diagnosis and management of various health condition... |
information | What is (are) mitochondrial complex III deficiency ? | Mitochondrial complex III deficiency is a genetic condition that can affect several parts of the body, including the brain, kidneys, liver, heart, and the muscles used for movement (skeletal muscles). Signs and symptoms of mitochondrial complex III deficiency usually begin in infancy but can appear later. The severity... |
frequency | How many people are affected by mitochondrial complex III deficiency ? | The prevalence of mitochondrial complex III deficiency is unknown, although the condition is thought to be rare. |
genetic changes | What are the genetic changes related to mitochondrial complex III deficiency ? | Mitochondrial complex III deficiency can be caused by mutations in one of several genes. The proteins produced from these genes either are a part of or help assemble a group of proteins called complex III. The two most commonly mutated genes involved in mitochondrial complex III deficiency are MT-CYB and BCS1L. It is l... |
inheritance | Is mitochondrial complex III deficiency inherited ? | Mitochondrial complex III deficiency is usually inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of t... |
treatment | What are the treatments for mitochondrial complex III deficiency ? | These resources address the diagnosis or management of mitochondrial complex III deficiency: - Gene Review: Gene Review: Mitochondrial Disorders Overview - Genetic Testing Registry: MITOCHONDRIAL COMPLEX III DEFICIENCY, NUCLEAR TYPE 6 - Genetic Testing Registry: MITOCHONDRIAL COMPLEX III DEFICIENCY, NUCLEAR TYPE 7 ... |
information | What is (are) malignant migrating partial seizures of infancy ? | Malignant migrating partial seizures of infancy (MMPSI) is a severe form of epilepsy that begins very early in life. Recurrent seizures begin before the age of 6 months but commonly start within a few weeks of birth. The seizures do not respond well to treatment. Although affected individuals may develop normally at fi... |
frequency | How many people are affected by malignant migrating partial seizures of infancy ? | MMPSI is a rare condition. Although its prevalence is unknown, approximately 100 cases have been described in the medical literature. |
genetic changes | What are the genetic changes related to malignant migrating partial seizures of infancy ? | The genetic cause of MMPSI is not fully known. Mutations in the KCNT1 gene have been found in several individuals with this condition and are the most common known cause of MMPSI. Mutations in other genes are also thought to be involved in the condition. The KCNT1 gene provides instructions for making a protein that f... |
inheritance | Is malignant migrating partial seizures of infancy inherited ? | MMPSI is not inherited from a parent and does not run in families. This condition is caused by a new mutation that occurs very early in embryonic development (called a de novo mutation). |
treatment | What are the treatments for malignant migrating partial seizures of infancy ? | These resources address the diagnosis or management of malignant migrating partial seizures of infancy: - Genetic Testing Registry: Early infantile epileptic encephalopathy 14 - MedlinePlus Encyclopedia: EEG These resources from MedlinePlus offer information about the diagnosis and management of various health cond... |
information | What is (are) Lujan syndrome ? | Lujan syndrome is a condition characterized by intellectual disability, behavioral problems, and certain physical features. It occurs almost exclusively in males. The intellectual disability associated with Lujan syndrome is usually mild to moderate. Behavioral problems can include hyperactivity, aggressiveness, extre... |
frequency | How many people are affected by Lujan syndrome ? | Lujan syndrome appears to be an uncommon condition, but its prevalence is unknown. |
genetic changes | What are the genetic changes related to Lujan syndrome ? | Lujan syndrome is caused by at least one mutation in the MED12 gene. This gene provides instructions for making a protein that helps regulate gene activity; it is involved in many aspects of early development. The MED12 gene mutation that causes Lujan syndrome changes a single protein building block (amino acid) in the... |
inheritance | Is Lujan syndrome inherited ? | This condition is inherited in an X-linked recessive pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition. In females (who have t... |
treatment | What are the treatments for Lujan syndrome ? | These resources address the diagnosis or management of Lujan syndrome: - Gene Review: Gene Review: MED12-Related Disorders - Genetic Testing Registry: X-linked mental retardation with marfanoid habitus syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health c... |
information | What is (are) systemic lupus erythematosus ? | Systemic lupus erythematosus (SLE) is a chronic disease that causes inflammation in connective tissues, such as cartilage and the lining of blood vessels, which provide strength and flexibility to structures throughout the body. The signs and symptoms of SLE vary among affected individuals, and can involve many organs ... |
frequency | How many people are affected by systemic lupus erythematosus ? | For unknown reasons, in industrialized Western countries SLE has become 10 times more common over the past 50 years. While estimates of its prevalence vary, SLE is believed to affect 14.6 to 68 per 100,000 people in the United States, with females developing SLE more often than males. It is most common in younger women... |
genetic changes | What are the genetic changes related to systemic lupus erythematosus ? | Normal variations (polymorphisms) in many genes can affect the risk of developing SLE, and in most cases multiple genetic factors are thought to be involved. In rare cases, SLE is caused by mutations in single genes. Most of the genes associated with SLE are involved in immune system function, and variations in these g... |
inheritance | Is systemic lupus erythematosus inherited ? | SLE and other autoimmune disorders tend to run in families, but the inheritance pattern is usually unknown. People may inherit a gene variation that increases or decreases the risk of SLE, but in most cases do not inherit the condition itself. Not all people with SLE have a gene variation that increases the risk, and n... |
treatment | What are the treatments for systemic lupus erythematosus ? | These resources address the diagnosis or management of systemic lupus erythematosus: - MedlinePlus Encyclopedia: Antinuclear Antibody Panel These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilita... |
information | What is (are) SADDAN ? | SADDAN (severe achondroplasia with developmental delay and acanthosis nigricans) is a rare disorder of bone growth characterized by skeletal, brain, and skin abnormalities. All people with this condition have extremely short stature with particularly short arms and legs. Other features include unusual bowing of the le... |
frequency | How many people are affected by SADDAN ? | This disorder is very rare; it has been described in only a small number of individuals worldwide. |
genetic changes | What are the genetic changes related to SADDAN ? | Mutations in the FGFR3 gene cause SADDAN. The FGFR3 gene provides instructions for making a protein that is involved in the development and maintenance of bone and brain tissue. A mutation in this gene may cause the FGFR3 protein to be overly active, which leads to the disturbances in bone growth that are characteristi... |
inheritance | Is SADDAN inherited ? | SADDAN is considered an autosomal dominant disorder because one mutated copy of the FGFR3 gene in each cell is sufficient to cause the condition. The few described cases of SADDAN have been caused by new mutations in the FGFR3 gene and occurred in people with no history of the disorder in their family. No individuals w... |
treatment | What are the treatments for SADDAN ? | These resources address the diagnosis or management of SADDAN: - Gene Review: Gene Review: Achondroplasia - Genetic Testing Registry: Severe achondroplasia with developmental delay and acanthosis nigricans - MedlinePlus Encyclopedia: Acanthosis Nigricans These resources from MedlinePlus offer information about the... |
information | What is (are) familial cold autoinflammatory syndrome ? | Familial cold autoinflammatory syndrome is a condition that causes episodes of fever, skin rash, and joint pain after exposure to cold temperatures. These episodes usually begin in infancy and occur throughout life. People with this condition usually experience symptoms after cold exposure of an hour or more, although... |
frequency | How many people are affected by familial cold autoinflammatory syndrome ? | Familial cold autoinflammatory syndrome is a very rare condition, believed to have a prevalence of less than 1 per million people. |
genetic changes | What are the genetic changes related to familial cold autoinflammatory syndrome ? | Mutations in the NLRP3 and NLRP12 genes cause familial cold autoinflammatory syndrome. The NLRP3 gene (also known as CIAS1) provides instructions for making a protein called cryopyrin, and the NLRP12 gene provides instructions for making the protein monarch-1. Cryopyrin and monarch-1 belong to a family of proteins cal... |
inheritance | Is familial cold autoinflammatory syndrome inherited ? | This condition is inherited in an autosomal dominant pattern from an affected parent; one copy of the altered gene in each cell is sufficient to cause the disorder. |
treatment | What are the treatments for familial cold autoinflammatory syndrome ? | These resources address the diagnosis or management of familial cold autoinflammatory syndrome: - Genetic Testing Registry: Familial cold autoinflammatory syndrome 2 - Genetic Testing Registry: Familial cold urticaria These resources from MedlinePlus offer information about the diagnosis and management of various h... |
information | What is (are) congenital hypothyroidism ? | Congenital hypothyroidism is a partial or complete loss of function of the thyroid gland (hypothyroidism) that affects infants from birth (congenital). The thyroid gland is a butterfly-shaped tissue in the lower neck. It makes iodine-containing hormones that play an important role in regulating growth, brain developmen... |
frequency | How many people are affected by congenital hypothyroidism ? | Congenital hypothyroidism affects an estimated 1 in 2,000 to 4,000 newborns. For reasons that remain unclear, congenital hypothyroidism affects more than twice as many females as males. |
genetic changes | What are the genetic changes related to congenital hypothyroidism ? | Congenital hypothyroidism can be caused by a variety of factors, only some of which are genetic. The most common cause worldwide is a shortage of iodine in the diet of the mother and the affected infant. Iodine is essential for the production of thyroid hormones. Genetic causes account for about 15 to 20 percent of cas... |
inheritance | Is congenital hypothyroidism inherited ? | Most cases of congenital hypothyroidism are sporadic, which means they occur in people with no history of the disorder in their family. When inherited, the condition usually has an autosomal recessive inheritance pattern, which means both copies of the gene in each cell have mutations. Typically, the parents of an ind... |
treatment | What are the treatments for congenital hypothyroidism ? | These resources address the diagnosis or management of congenital hypothyroidism: - Baby's First Test - Genetic Testing Registry: Congenital hypothyroidism - Genetic Testing Registry: Hypothyroidism, congenital, nongoitrous, 1 - MedlinePlus Encyclopedia: Congenital Hypothyroidism These resources from MedlinePlus ... |
information | What is (are) Rubinstein-Taybi syndrome ? | Rubinstein-Taybi syndrome is a condition characterized by short stature, moderate to severe intellectual disability, distinctive facial features, and broad thumbs and first toes. Additional features of the disorder can include eye abnormalities, heart and kidney defects, dental problems, and obesity. These signs and sy... |
frequency | How many people are affected by Rubinstein-Taybi syndrome ? | This condition is uncommon; it occurs in an estimated 1 in 100,000 to 125,000 newborns. |
genetic changes | What are the genetic changes related to Rubinstein-Taybi syndrome ? | Mutations in the CREBBP gene are responsible for some cases of Rubinstein-Taybi syndrome. The CREBBP gene provides instructions for making a protein that helps control the activity of many other genes. This protein, called CREB binding protein, plays an important role in regulating cell growth and division and is essen... |
inheritance | Is Rubinstein-Taybi syndrome inherited ? | This condition is considered to have an autosomal dominant pattern of inheritance, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Most cases result from new mutations in the gene and occur in people with no history of the disorder in their family. |
treatment | What are the treatments for Rubinstein-Taybi syndrome ? | These resources address the diagnosis or management of Rubinstein-Taybi syndrome: - Gene Review: Gene Review: Rubinstein-Taybi Syndrome - Genetic Testing Registry: Rubinstein-Taybi syndrome - MedlinePlus Encyclopedia: Rubinstein-Taybi syndrome These resources from MedlinePlus offer information about the diagnosis ... |
information | What is (are) surfactant dysfunction ? | Surfactant dysfunction is a lung disorder that causes breathing problems. This condition results from abnormalities in the composition or function of surfactant, a mixture of certain fats (called phospholipids) and proteins that lines the lung tissue and makes breathing easy. Without normal surfactant, the tissue surro... |
frequency | How many people are affected by surfactant dysfunction ? | One type of surfactant dysfunction, SP-B deficiency, is estimated to occur in 1 in 1 million newborns worldwide. The prevalence of surfactant dysfunction due to other causes is unknown. |
genetic changes | What are the genetic changes related to surfactant dysfunction ? | Surfactant dysfunction is caused by mutations in one of several genes, including SFTPB, SFTPC, and ABCA3. Each of these genes is involved in the production of surfactant. The production and release of surfactant is a complex process. The phospholipids and proteins that make up surfactant are packaged in cellular struct... |
inheritance | Is surfactant dysfunction inherited ? | Surfactant dysfunction can have different inheritance patterns depending on its genetic cause. When caused by mutations in the SFTPB or ABCA3 gene, this condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autoso... |
treatment | What are the treatments for surfactant dysfunction ? | These resources address the diagnosis or management of surfactant dysfunction: - Children's Interstitial and Diffuse Lung Disease (chILD) Foundation: Surfactant Deficiency - Genetic Testing Registry: Surfactant metabolism dysfunction, pulmonary, 1 - Genetic Testing Registry: Surfactant metabolism dysfunction, pulmon... |
information | What is (are) pyridoxal 5'-phosphate-dependent epilepsy ? | Pyridoxal 5'-phosphate-dependent epilepsy is a condition that involves seizures beginning soon after birth or, in some cases, before birth. The seizures typically involve irregular involuntary muscle contractions (myoclonus), abnormal eye movements, and convulsions. Most babies with this condition are born prematurely ... |
frequency | How many people are affected by pyridoxal 5'-phosphate-dependent epilepsy ? | Pyridoxal 5'-phosphate-dependent epilepsy is a rare condition; approximately 14 cases have been described in the scientific literature. |
genetic changes | What are the genetic changes related to pyridoxal 5'-phosphate-dependent epilepsy ? | Mutations in the PNPO gene cause pyridoxal 5'-phosphate-dependent epilepsy. The PNPO gene provides instructions for producing an enzyme called pyridoxine 5'-phosphate oxidase. This enzyme is involved in the conversion (metabolism) of vitamin B6 derived from food (in the form of pyridoxine and pyridoxamine) to the activ... |
inheritance | Is pyridoxal 5'-phosphate-dependent epilepsy inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for pyridoxal 5'-phosphate-dependent epilepsy ? | These resources address the diagnosis or management of pyridoxal 5'-phosphate-dependent epilepsy: - Genetic Testing Registry: Pyridoxal 5'-phosphate-dependent epilepsy - MedlinePlus Encyclopedia: Lactic acidosis These resources from MedlinePlus offer information about the diagnosis and management of various health ... |
information | What is (are) Andersen-Tawil syndrome ? | Anderson-Tawil syndrome is a disorder that causes episodes of muscle weakness (periodic paralysis), changes in heart rhythm (arrhythmia), and developmental abnormalities. The most common changes affecting the heart are ventricular arrhythmia, which is a disruption in the rhythm of the heart's lower chambers, and long Q... |
frequency | How many people are affected by Andersen-Tawil syndrome ? | Andersen-Tawil syndrome is a rare genetic disorder; its incidence is unknown. About 100 people with this condition have been reported worldwide. |
genetic changes | What are the genetic changes related to Andersen-Tawil syndrome ? | Mutations in the KCNJ2 gene cause Andersen-Tawil syndrome. The KCNJ2 gene provides instructions for making a protein that forms a channel across cell membranes. This channel transports positively charged atoms (ions) of potassium into muscle cells. The movement of potassium ions through these channels is critical for ... |
inheritance | Is Andersen-Tawil syndrome inherited ? | This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In some cases, a person with Andersen-Tawil syndrome inherits the mutation from one affected parent. Other cases result from new mutations in the KCNJ2 gene. These cas... |
treatment | What are the treatments for Andersen-Tawil syndrome ? | These resources address the diagnosis or management of Andersen-Tawil syndrome: - Gene Review: Gene Review: Andersen-Tawil Syndrome - Genetic Testing Registry: Andersen Tawil syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Te... |
information | What is (are) Manitoba oculotrichoanal syndrome ? | Manitoba oculotrichoanal syndrome is a condition involving several characteristic physical features, particularly affecting the eyes (oculo-), hair (tricho-), and anus (-anal). People with Manitoba oculotrichoanal syndrome have widely spaced eyes (hypertelorism). They may also have other eye abnormalities including sm... |
frequency | How many people are affected by Manitoba oculotrichoanal syndrome ? | Manitoba oculotrichoanal syndrome is estimated to occur in 2 to 6 in 1,000 people in a small isolated Ojibway-Cree community in northern Manitoba, Canada. Although this region has the highest incidence of the condition, it has also been diagnosed in a few people from other parts of the world. |
genetic changes | What are the genetic changes related to Manitoba oculotrichoanal syndrome ? | Manitoba oculotrichoanal syndrome is caused by mutations in the FREM1 gene. The FREM1 gene provides instructions for making a protein that is involved in the formation and organization of basement membranes, which are thin, sheet-like structures that separate and support cells in many tissues. The FREM1 protein is one... |
inheritance | Is Manitoba oculotrichoanal syndrome inherited ? | This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. |
treatment | What are the treatments for Manitoba oculotrichoanal syndrome ? | These resources address the diagnosis or management of Manitoba oculotrichoanal syndrome: - Gene Review: Gene Review: Manitoba Oculotrichoanal Syndrome - Genetic Testing Registry: Marles Greenberg Persaud syndrome - MedlinePlus Encyclopedia: Omphalocele Repair These resources from MedlinePlus offer information abo... |
information | What is (are) isolated ectopia lentis ? | Isolated ectopia lentis is a condition that affects the eyes, specifically the positioning of the lens. The lens is a clear structure at the front of the eye that helps focus light. In people with isolated ectopia lentis, the lens in one or both eyes is not centrally positioned as it should be but is off-center (displa... |
frequency | How many people are affected by isolated ectopia lentis ? | The prevalence of isolated ectopia lentis is unknown. In Denmark, an estimated 6.4 per 100,000 individuals have ectopia lentis, but a large proportion of these cases (about 75 percent) are syndromic. |
genetic changes | What are the genetic changes related to isolated ectopia lentis ? | Mutations in the FBN1 or ADAMTSL4 gene cause isolated ectopia lentis. These genes provide instructions for making proteins that are necessary for the formation of threadlike filaments called microfibrils. Microfibrils provide support to many tissues, including the lenses of the eyes, which are held in position by these... |
inheritance | Is isolated ectopia lentis inherited ? | When isolated ectopia lentis is caused by mutations in the FBN1 gene, it is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In some cases, an affected person inherits the mutation from one affected parent. Other cases result from new... |
treatment | What are the treatments for isolated ectopia lentis ? | These resources address the diagnosis or management of isolated ectopia lentis: - Gene Review: Gene Review: ADAMTSL4-Related Eye Disorders - Genetic Testing Registry: Ectopia lentis, isolated autosomal recessive - Genetic Testing Registry: Ectopia lentis, isolated, autosomal dominant These resources from MedlinePl... |
information | What is (are) tuberous sclerosis complex ? | Tuberous sclerosis complex is a genetic disorder characterized by the growth of numerous noncancerous (benign) tumors in many parts of the body. These tumors can occur in the skin, brain, kidneys, and other organs, in some cases leading to significant health problems. Tuberous sclerosis complex also causes developmenta... |
frequency | How many people are affected by tuberous sclerosis complex ? | Tuberous sclerosis complex affects about 1 in 6,000 people. |
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